Group Illustrator Layers by Color

I have a finished T-shirt vector in Adobe Illustrator (.ai). What I still need is a clean layer structure: every element must sit inside a group that represents its color. No extra naming or labeling is necessary beyond the color-based grouping... (Budget: $10 - $30 AUD, Jobs: Adobe Creative Cloud, Adobe Creative Suite, Adobe Illustrator, Adobe Systems, Graphic Design, Illustration, Illustrator, Logo Design, Photoshop, Vector Design)